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/*! \internal \file
 * \brief
 * Stub implementation of PlumedMDModule
 * Compiled in case if Plumed is not activated with CMake.
 *
 * \author Daniele Rapetti <drapetti@sissa.it>
 * \ingroup module_applied_forces
 */
#include "gmxpre.h"

#include <memory>
#include <string>

#include "gromacs/mdrunutility/mdmodulesnotifiers.h"
#include "gromacs/mdtypes/imdmodule.h"
#include "gromacs/utility/exceptions.h"

#include "plumedMDModule.h"


namespace gmx
{

namespace
{

/*! \internal
 * \brief Plumed module
 *
 * Stub Implementation in case Plumed library is not compiled
 */
class PlumedMDModule final : public IMDModule
{
public:
    //! \brief Construct the plumed module.
    explicit PlumedMDModule() = default;

    void subscribeToPreProcessingNotifications(MDModulesNotifiers* /*notifier*/) override {}

    void subscribeToSimulationSetupNotifications(MDModulesNotifiers* notifier) override
    {
        // Access the plumed filename this is used to activate the plumed module
        notifier->simulationSetupNotifier_.subscribe(
                [](const PlumedInputFilename& plumedFilename)
                {
                    if (plumedFilename.plumedFilename_.has_value())
                    {
                        GMX_THROW(
                                InvalidInputError("GROMACS is not compiled with the PLUMED "
                                                  "interface, if you want to use "
                                                  "-plumed option, please reconfigure GROMACS with "
                                                  "-DGMX_USE_PLUMED=ON."));
                    }
                });
    }

    IMdpOptionProvider* mdpOptionProvider() override { return nullptr; }

    IMDOutputProvider* outputProvider() override { return nullptr; }

    void initForceProviders(ForceProviders* /*forceProviders*/) override {}
};


} // namespace

std::unique_ptr<IMDModule> PlumedModuleInfo::create()
{
    return std::make_unique<PlumedMDModule>();
}

} // namespace gmx
